's latest unemployment statistics and wondering what they say about their economy as a whole. revised numbers for 2012 are offering encouragement, but the data for january suggests more challenges lie ahead. u.s. labor department spokespersons say the unemployment rate for january edged up to 7.9%. it was 7.8% in the previous month. it stayed below 8% for five straight months. american employers added 157,000 jobs in the non-farm sector. analysts had expected 180,000. employment in the retail sector rose by 33,000. transportation in warehousing shed about 14,000 jobs. the latest u.s. labor report shows employers added more jobs in 2012 than previously estimated, but economists are also focusing on the weaknesses the january data exposed. here's the chief economist from the daiwa capital markets america. >> on the positive side, there were no upward revisions to pass job data on job growth. if you look at the data for 2012, we are now looking at 180,000 jobs per month rather than an average of 153,000 per month. that's a noeshl upward revision, and it shows that the labor market strong